The changes cd-rw.org made the "average" bitrates is flawed. The reason ranges should not be given next to bitrates is because if you are to do that, you should do both extreme ends of the bitrate range. I have tracks which go down to 128kbps with dm-standard, and I've also seen tracks which cause --r3mix to go over 260kbps. Looking at the ranges on there now, it seems a bit skewed. Maybe someone would want to comment on that over there, or change it back to averages only.

The original testing I did to determine rough average bitrates for the various presets were across a wide range of music (various forms of metal, various forms of electronic, experimental, ambient, spoken word, music with classical elements, etc) , with at least 20 cd.. this covered a large bitrate spectrum, I gather that the changes made to the presets listed there now are only from picking out a few tracks here and there and assuming particular behavior is common across most files.